Today's "Planet Earth Report" --The Rise and Fall of Silicon Valley

 

DVYyUKgVAAIWVzu.1517959989

 

"In retrospect, perhaps that ever-expanding gap between Californian dreams and American realities led to the undoing of Silicon Valley. Its detachment from the lives and concerns of ordinary Americans can be seen today in the unhinged Twitter rants of Space X founder Elon Musk, the extreme politics of PayPal co-founder Peter Thiel, and the fatuous dreams of immortality of Google’s vitamin-popping director of engineering, Ray Kurzweil. Silicon Valley’s moral decline has never been clearer, and it now struggles to survive the toxic mess it has created."

Continue reading " Today's "Planet Earth Report" --The Rise and Fall of Silicon Valley" »


Alien Planets Without Detectable Oxygen --"Could Be Teeming with Life"

 
6a00d8341bf7f753ef01a73d7bd214970d

 

"You could be looking at a planet and not see any oxygen -- but it could be teeming with microbial life," says Matt Koehler at the University of Washington. "So, if you fail to detect oxygen in a planet's atmosphere, that doesn't mean that the planet is uninhabited or even that it lacks photosynthetic life. Merely that it hasn't built up enough sources of oxygen to overwhelm the 'sinks' for any longer than a short interval. "In other words, lack of oxygen can easily be a 'false negative' for life."

Continue reading "Alien Planets Without Detectable Oxygen --"Could Be Teeming with Life"" »


Mystery Signal from the Dawn of the Universe --"May Unveil a New Physics" (Today's Top Science News)

 

GALAXY-and-GAS_highres-1_1024

 

“The stakes are high because if the signal is real, this experiment is worth two Nobel prizes,” says astronomer Abraham Loeb of Harvard University. “One for being first to detect the 21 cm signal from the cosmic dawn and the second for finding an unexpected level of hydrogen absorption that may be indicative of new physics.”

Continue reading "Mystery Signal from the Dawn of the Universe --"May Unveil a New Physics" (Today's Top Science News)" »


"Missed the Cut" --Infrared Chemistry Scan Nixes Earth's Alien-Twin Candidate

 

Eso1736a-rotated

 

Last autumn, the world was excited by the discovery of an exoplanet called Ross 128 b, which is just 11 light years away from Earth. New work from a team led by Diogo Souto of Brazil's Observatório Nacional and including Carnegie's Johanna Teske has for the first time determined detailed chemical abundances of the planet's host star, Ross 128. Using the Sloan Digital Sky Survey's APOGEE spectroscopic instrument, the team measured the star's near-infrared light to derive abundances of carbon, oxygen, magnesium, aluminum, potassium, calcium, titanium, and iron.

 

Continue reading ""Missed the Cut" --Infrared Chemistry Scan Nixes Earth's Alien-Twin Candidate" »


"Ancient Scars" --Our Planet's Telltale Traces of Collisions With Dark Matter

 


Dark-Matter-Web


Minerals deep inside Earth might contain telltale traces of collisions with dark matter — the elusive stuff that researchers think makes up most of the matter in the Universe. Experiments designed to search for these traces could one day complement or even compete with ongoing efforts to detect dark matter directly.

Continue reading " "Ancient Scars" --Our Planet's Telltale Traces of Collisions With Dark Matter" »


"The First Quasar?" Newly Discovered Object's Light has been Traveling 13 Billion of the Universe's 13.7 Billion Years

 

  175037_web

 

A newly discovered quasar's light has been traveling nearly 13 billion of the universe's 13.7 billion years to reach us here in Earth. P352-15 is the first quasar with clear evidence of radio jets seen within the first billion years of the universe's history.

Continue reading ""The First Quasar?" Newly Discovered Object's Light has been Traveling 13 Billion of the Universe's 13.7 Billion Years" »


Today's "Planet Earth Report" -- Melting Glaciers Abruptly Ended 1,000 Years of Global Warming

 

6a00d8341bf7f753ef01b7c930aab7970b-800wi

 

"This abrupt climate change—known as the Younger Dryas—ended more than 1,000 years of warming," explains Lloyd Keigwin, an oceanographer at WHOI and lead author of the paper published online July 9, 2018, in the journal Nature Geoscience. A research team led by Woods Hole Oceanographic Institution (WHOI) found the fingerprint of a massive flood of fresh water in the western Arctic, thought to be the cause of an ancient cold snap that began around 13,000 years ago.

Continue reading "Today's "Planet Earth Report" -- Melting Glaciers Abruptly Ended 1,000 Years of Global Warming" »


"Geysers & Fossils" --NASA Does a Deep Dive on Europa's Global Ocean

 

Hubble_Europa_thumbnail-7916ffb7fb20a5bc

 

"I know, I know," writes Caltech's Mike Brown, the Richard and Barbara Rosenberg Professor of Planetary Astronomy, who specializes in the discovery and study of bodies at the edge of the solar system. "We have all been instructed by Arthur C. Clarke to attempt no landings on Europa. But if you did land on Europa, wouldn’t you like to know where to go?

 

Continue reading ""Geysers & Fossils" --NASA Does a Deep Dive on Europa's Global Ocean " »


Earth's "First Contact" May be Ghost Signals from Long-Vanished ET Civilizations

 

  Video-Dr.-Michio-Kaku-Alien-Civilizations

 

The human species has been transmitting radio waves for only about 80 years, so our radio waves cover less than 0.001 percent of the Milky Way. Electromagnetic signals (blue circles shown below) from alien civilizations will continue traveling through the Milky Way even after the aliens are gone. The appearance of a doughnut hole represents when a civilization dies out.

Continue reading "Earth's "First Contact" May be Ghost Signals from Long-Vanished ET Civilizations" »